Here's a rundown of what's happening on June 30, 2017, at Summerfest. Scroll down for the full lineup. Paul Simon w/ Brandi Carlile American Family Insurance Amphitheater 7:30 p.m. Wha,Summerfest 2017more

Zac Brown Band American Family Insurance Amphitheater 7:30 p.m. Their sound alternates between soulful and infectious, unabashedly country yet not limited by the restraints the label puts on som,Summerfest 2017more